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  1. MariaDB Server
  2. MDEV-25124

benchmark 10.6 performance for PMEM enabled builds

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      Before enabling PMEM in builds by default (cmake -DWITH_PMEM=ON), we want to make sure it doesn't have negative impact on performance on non-PMEM systems.

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            axel Axel Schwenke added a comment -

            Benchmark has been run. Workload: all types of sysbench OLTP workloads, with and without explicit transaction boundaries. Datadir was located on /dev/shm and innodb_flush_log_at_trx_commit = 1 to make sure we test the effects of code changes and not IO limitations of the environment.

            axel Axel Schwenke added a comment - Benchmark has been run. Workload: all types of sysbench OLTP workloads, with and without explicit transaction boundaries. Datadir was located on /dev/shm and innodb_flush_log_at_trx_commit = 1 to make sure we test the effects of code changes and not IO limitations of the environment.

            The sysbench.pdf matches what I observed when running performance tests after implementing a PMEM friendly redo log format and interface in MDEV-14425. With MDEV-14425, I observed some 10% to 15% improvement. I compared the speed of ib_logfile0 stored in the same PMEM device with and without mount -o dax.

            marko Marko Mäkelä added a comment - The sysbench.pdf matches what I observed when running performance tests after implementing a PMEM friendly redo log format and interface in MDEV-14425 . With MDEV-14425 , I observed some 10% to 15% improvement. I compared the speed of ib_logfile0 stored in the same PMEM device with and without mount -o dax .

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              axel Axel Schwenke
              axel Axel Schwenke
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